Just pulled the power to my DD just like you.
Same problem, same result.
I was thinking of just adding a toggle to the power in so I can use it and shut it down when its sitting.
Bush league fix but easy & effective
edit: I think there's an internal limit switch thats efing up so it never knows its down all the way.
I have another antenna that I was going to open up, I just hate to bust it
96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already
fixt the 4L60E twice
95 Black WB4 Hole...ee...grail
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD